Used MARUEI Grinding Machines for Sale
UsedUltra feature used MARUEI cylindrical grinders, CNC cylindrical grinding machines, internal grinders, and combination grinding systems. Equipment configurations can range from compact manual machines for individual parts to CNC models equipped for automated production. Availability varies according to current inventory.
Available Used MARUEI Machines
About MARUEI Machines
Maruei Machine Works Co., Ltd. is a Japanese grinding-machine manufacturer based in Nagaoka, Niigata Prefecture. Its product program centers on compact cylindrical grinders, internal grinders, CNC combination grinding machines, and specialized equipment developed for particular production requirements.
The company’s range includes both manually operated machines for flexible, low-volume work and CNC models designed for repeat production. The long-running MG-200 and MG-300 series uses a compact layout for small cylindrical components. CNC families such as the NMG and HGM series add programmable motion and can be integrated with gantry loaders or industrial robots for automated operation.
MARUEI’s internal and combination grinders reflect a strong focus on consolidating several precision operations. The NIG-300, for example, can be configured to grind internal diameters, external diameters, faces, and tapers in one clamping. Its swiveling workhead and optional measuring equipment support complex small-part applications. The UMG series uses a turret arrangement that can carry multiple external and internal grinding spindles.
These characteristics make used MARUEI machines relevant to precision component manufacturers that need controlled roundness, dimensional consistency, and surface finish without dedicating excessive factory space to larger grinding equipment. Buyers may also consider them when replacing an existing MARUEI machine, expanding a small-part grinding cell, or acquiring specialized capacity at a lower investment than new equipment.